Sash-lock



2 Sheets-Sheet 2.

(No Modl.)

I'. W. LEWIS. SASH LOCK.

No. 559,587. Y Patented May 5, 1896.

ANDRDN HLRAHM. PHOTOUTHQWASRINGTUN, D C 4 PATENT EErcE.

ISAAC VRIGIIT LEVIS, OF PORTLAND, OREGON.

SASH-LOC K.

SPECIFICATION formingpart of Letters Patent No. 559,587, dated May 5,1896.

Application flied runway 28.1895. serial No. 540,029. iN@ model.)

T o all whom, t may con/cern.-

Be it known that I, Isaac WRIGHT Lewis, a citizen of the United States,and a resident of Portland, in the county of Multnomah and State ofOregon, have invented certain new and useful Improvements in Sash-Locksand l do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, refcrence being hadto the accompanying drawings, and to letters of reference markedthereon, which form a part of this speciiication.

My invention relates to an improvement in sash-fasteners, the obj ectbeing to provide simple and eiiicient means for locking theineetingrails of sashes.

A further object is to so construct and arrange the parts that anunlocking of the fastener cannot be effected bythe introduction of aknife or other tool between the meetingrails of the sash.

iVith these objects in view my invention consists in certain novelfeatures of construction and combinations of parts, as will be hereinafter more fully described, and pointed out in the claims.

In the accompanying drawings, Figure l is a view in section of myinvention applied in its operative position. Fig. 2 is a plan view ofsame, the meeting-rails being broken away. Fig. 3 is a plan view of amodified construetion. Fig. e is a perspective view of the bolt. Fig. 5is a plan view of plate E, and Fig. G is a view in transverse section ofsame.

A represents the lower rail of the upper sash, and B the upper rail ofthe lower sash. Secured to the upper face of the rail A is a plate C, tothe inner edge portion of which is hinged a iia-p D, which is arrangedwhen turned down to rest upon the upper face of a plate E, secured uponthe rail B. The outer edge of the plate E, or the edge adjacent to theplate C, has thereon an upturned ledge or flan ge e, the outer edge ofwhich is inclined slightly, as shown, while its upper face is curved, asat c. To receive this ledge or iiange the flap D is arched upwardly fromthe hinge, forming in its under face a seat j', which neatly iits saidledge or iiange. The outer edge of the ledge or flange when the lock isfastened abuts against the hinge and the inner face against aslightly-inclined shoulder f of the flap.

The plate E has cut therein an oblong slot F with rounded ends and isprovided on its side and inner edge with a depending flange g, whichlatter rests on the rail B, and hence raises the body of face ot" thepla-te E above the rail, thus forming a recess between plate E and therail for the reception of the oblong head h of the bolt H.

H designates the bolt, which latter is loosely mounted in the flap Dthrough the intervention of the screw j and the concave washer J. Thisbolt consists of an oblong head 7L, two disks of unequal sizes above thehead, and an angular section above the upper disk, all of said partsbeing integral and provided centrally with a female threaded hole forthe passage of the screw j. This bolt is passed upwardly through theiiap E from the under side thereof until the upper face of the largedisk bears against the under face thereof. When in this position, thesmaller disk rests within the opening,while the angular section is abovethe flap. The lever I, which is provided with an angular openingcorresponding in size and shape with the angular section of the bolt, isthen placed on the angular section of the bolt, after which the curvedwasher is placed in position on the lever with the opening therein inalinement with the opening in the bolt. The parts. thus assembled arelocked by thc screw j, which is passed through the washer into thefemale screw-threaded hole in the bolt. The washer being of thin metalis coinpressed by the screw and gives the requisite friction on the faceof the flap D. Flap D is provided with lateral shoulders j j', whichform stops for the lever at its opposite limits of movement, and whenthe lever is in contact with either stop the bolt 7L rests lengthwisethe opening, thus leaving the flap free to be turned upwardly.

Then the lock is not in use, the flap D, with the lever, is turned upand outward into substantially vertical position, the hinge ed ge of theiiap contacting with the plate C to limit such movement, the friction ofthe hinge being sufficient to prevent the flap from falling by a jar.

In locking, the iiap and lever are brought down onto the plate E, thescat f hooking over the curved surface of the ledge or flange yc,forcing the meeting sash-rails to a level and at the same time drawingthem tightly together. The leveris then turned to the right or left,thus bringing the flanged head of the bolt transversely of the slot andlock.- ing the sashes together very rigidly and securely. It will beseen from the foregoing that the ledge or flange e acts as a fulcruinfor the shoulder f of the flap to work upon to draw the rails together.

If, in running up the upper sash previous to locking, the meeting-railsfail to come into alinement, the lever affords means whereby the saidupper sash may be forcibly pulled to its seat. It will also be seenthat, should the two sections C and E be somewhat out of alinement, thelock will operate all right, provided the bolt can enter the oblong slotF.

The manner in which the iiap D closes overk the joint between the sashesand the neat manner'in which it lits over the ledge or flange e rendersit impossible to reach the lever by means of a knife or other toolinserted from the outside between the sashes.

Insteadk of forming the lever as above described and as shown in Figs.l. and 2, such.

lever may consist of a flat thumb-piece I) on the top, as shown in Fig.3. lVhile this thumbpiece may be rigid with its base, which iits thesquared shank of the nut, I prefer that it shall be hinged or pivotedthereto, as shown, in order that it may fall or lie flat when not inuse.

The parts composing the lock may be stamped from sheet metal or they maybe cast. The exterior shape of the lock may be to be securedrespectively to the two meetf ing-rails of window-sashes, one of theseplates having an elongated transversely-disposed` slot, of a flap hingedto one plate, a bolt having an elongated head thereon of less lengththan the lengthof the slot whereby to admit of the entrance of the headeven when the bolt is a little to one side of the longitudinal center oftheslot, substantially as set forth.

2. The herein-described sash-lock; consisting of a plate, carrying apivoted flap', a lock-r ing-bolt carried by said ap, a handle foractuating the locking-bolt and a second plate having an oblong slotfoi-fthe passage of the bolt, and a marginal flan ge, the latter adaptedto rest on the upper face of the sash-rail, substantially as set forth.f

In testimony whereof I affix. inysignaturc in presence of two witnesses.

ISAAC XVRIGHT LEWIS.

lVitnesses:

S. C. CATcHiNG, GEO. W. MoGARvER.

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